The ideas behind electrophilic addition to alkenes, and electrophilic substitution in benzene derivatives are discussed. Teaching these concepts to secondary school students is stressed. Five main points useful at this age level are summarized. (Author/CW)

Explored in this article are various cultural beliefs against the backdrop of the science syllabus prescribed by the Caribbean Examinations Council. Allowances for different beliefs between Caribbean islands are suggested. (CW)

Discusses results of a questionnaire sent to both primary and secondary teachers in Derbyshire, Great Britain. The nature of science education, attitudes of secondary science teachers to primary science, origins, extent and nature of liaisons in science at the primary/secondary interface, and ways in which the liaison influences science education…

Evidence is offered that the Levels of Attainment in Science in Britain's National Curriculum will be achieved by only the top 20 percent of 14 and 16 year olds, rather than 50 percent as planned. New teaching skills are presented as ways to alter this prediction. Success in improving standards is demonstrated in three examples. (Author/KR)

Recommended are positive steps teachers can take to enhance access and motivation for students. Stressed is the idea that paying attention to the needs of girls as individuals with differing interests and expectations, and valuing their contributions should enhance instruction for all students. (Author/CW)

Describes a science department's evaluation of the way teachers use questions in the teaching of science. Explains how the evaluation is organized and discusses what is revealed about the art of asking questions and encouraging students to do the same. (DDR)

Outlines an ideal physics curriculum where key ideas are learned using an apprenticeship model. Discusses the implications of a shift towards Internet-based learning. (DDR)

Argues that the United Kingdom's National Curriculum recommendations regarding data analysis tasks do not explain the specific activities clearly enough to assist teachers in deciding what practices to follow. Presents research that shows that the range of data-analysis tasks that pupils can perform depends on the type of data as well as on the…

A biology curriculum that reflects the practice of biologists, based on a clear description of what biologists know and do, would provide some pupils with a basis for future scientific work and all students with basic scientific literacy. Contends that the British National Curriculum contains an inadequate representation of the work of practicing…

Reports on two classroom studies in which teachers deliberately evaluated their own teaching strategies in relation to their students' writing and homework tasks. Students were asked about their preferences for the various strategies. Finds that effective learning requires pupils to be mentally active in and take some responsibility for their own…

Designates Frank Halliwell as an inspiring science teacher who employed the demonstration lecture method very effectively. Traces the origin and development of this method to John Tyndall and provides numerous examples of his work. (DDR)

Presents the results of a study that elucidates children's developing powers of explanation as they relate to global warming and ozone depletion. Discusses the results using charts and provides questions from the questionnaire used in the study. (DDR)

States that constructive thinking about variables seems to be a key to accelerated learning in science and that computer modeling can enable this. A taped sequence of a group in the exploratory use of a model reveals the potential of such activity. (Author/ASK)

Presents two quantitative Faraday's law experiments using a computer-assisted data-logging system. (Author/ASK)

Describes a class project that included a literature search, observation of the Hale-Bopp comet, planning and building a model solar system, and presentation of the model in class. Finds that bilingual students in the class made significant progress in their learning of concepts and the acquisition of English as a result of completing the project.…